Improvement in grain-separators



DANlEL BEST.

Improvement in Grain-Separatos.` No. 114,097. PatentedApmzrs,um.V

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DANIEL BEST, 0F YUBA, CALIFORNIA.

Letters Patent No. 114,097, dated April 25, 1871.

VIMPROVEMENT IN GRAlN-SEPARATRS.

The vSchedule :eferred to in these Letters Patent and making part of the same.

To all whom it may concern Be it known that I, DANIEL BEST, of the city and county of Yuba, State of California, have invented an Improved Portable Grain-Separator, and I do hereby declare the following description and accompanying drawing are sufiicientto enable any person skilled in the art or science to which it most nearly appertains to make and use my said invention or improvements without further invention or experiment.

The object of my invention is to providean improvement in grain-separators and l It'consists, first, in the employment of a series of peculiarly-shaped screens for the purpose of separating and cleaning the different qualities of grain. These screens are all held in the same frame, and receive a side shaking motion all at once.

It also relates to the use of feeding and returningelevators by which the grain can be fed to the hopper with very little labor, and by which the grain can be returned to the hopper, if desired, for a second clean- 1n is so arranged that it will either discharge the grain immediately, or will allow it to pass to the returningelevator' if it be found not clean enough.

The first quality of grain is allowed to fall upon a screen which has a'peculiar tossing motion, and which throws it into the discharge-spout; or, by reversing the movement of its driving-pulley, the grain can be kept in the screen as long as desired, or until it is Derfectly cleaned.

A set of angular plates is introduced between the screens, and by its action and the shape of the screns, the blast is directed upward inste'ad of back-V 'Wal Referring to the accompanying drawing for a more complete explanation of my invention- Figure l is a side elevation.

Figure 2 is a vertical section.

A A are wheels which support the frame B, and upon this frame the machine is constructed so that it Vis easily moved from place to place.

'sirable The discharge-spout for the second quality of grain The two sets of screens are separated by a riddle consisting of a series of vanes, I, which stand at an angle, as shown, and by their action direct the wind from the fans forward and upward to the upper series of screens, and also direct the clean grain downward and backward to the lowermost screen.

v-Ihe frame H, which contains the screens and riddle, has a side shaking motion given to it by means ofthe 'bell-crank J, connecting-rod K, and crank or eccentric-wheel L, so that all the screens have the same motion. The screens are given a peculiar downward curve near their rear end, so as to facilitate the discharge of the grain after it has passed beyond the reach of the blast.

The lowest. screen, M, upon which the good wheatv finally falls, is suiicicntly fine to retain the wheat, but `allows the cheat, mustard,&c., to fall through into a pan, N, which collects them and finally discharges them into a lreceptacle at one side.

' The screen M is entirely separate from the upper set of screens G, and has a peculiar tossing motion given it in the'following manner: f

The lower end next to the'dischargefspout is hun; upon short cranks o, the shaft of which is revolved by a pulley.

The upper end of therscreen is suspended by short links o', which simplyl swing forward and-backward. The motion thusl given'is'a peculiar toss, which throws the grain up from the .screen and allows a' thorough separation from the' small grain. The wheat islatthe same time advanced, and' isl finally `thrown iintd'theV discharge-spoutp, from which it is delivered-atene end by a screw.

At the rear of the screens G are two Yinclined discharge-spouts, Q and R. Ther'barley and light grain are carried into `the spout Q aud-discharged at one side. The wheat fallsv through l the vfirst'setof screens and the riddle I to the second set. The good Vwheat passes through this set, also, as above described.

The second quality of grain will be carried over the rear edge of the screensV and will fall into the spout R, from which it will be discharged at the side or, if it be desired to give it a further cleaning,- a gate near the center of the spout R is closed, and 'the grain-is directed into a spout, S, which, discharges it into thev elevator T. This elevator discharges the grainxintoY manner that the blast is thrown up, 'insteadofback' ward, through the screens. By thefshapeff Y'the screens and the riddle I, the effect of the blast does not extend beyond the point where the screens begin Y R and S, and.v the riddles I, ali constructed and arranged to operate substantially as and for the 'purpose .Set forth.

2. The combination and arrangement ot' the double set-of curved screens Gr and G', fans V V, and the riddles I, all constructed as described, and operating substantially sV and for the purpose specified.

ln witness whereof I have herenco' seti my hand and seal.,

DANIEL BEST. L. s.]

Nitnessern JONAS MARCUS,

JACOB l?, CLARK. 

